Press



April 7, 1931- F. B. YINIGUN'G 1,799,718

PRESS Filed April 7, 1928 6 Sheets-Sheet l G trom-neg April 7, 1931. s; B. YINGLING PRESS Filed, April 7, 192e 6 Sheets-Sheet 2 Gtforncg April 7, 1931.

F. B. YlNGLlNG 1,799,718

PREss Filed April 7, 1928 6 Shee'bS-Shee'li 4 IS iwentor Gttorneg April 7, 1931. r. B. YINGLING PRESS Filed April 7, 1928 6 Sheets-Sheet 5 E #Iliff/'IIIA l n Gttorneg April 7, 1931 F. B. YINGLING 1,799,718

PRESS Filed April '7, 1928 6 Sheets-Sheet 6 3 Inventor @ww QQMQ Gttorneg Patented Apr. 7, 1931 unirse STATES PATENT OFFICE FRANK B. YIGLING, F AMILTON, OHIO, ASSIGNOB T0 HE CERAMIC MACHINERY COMPANY, OF HAMILTON, OHIO PRESS Application led April 7, 1928.( Serial No. 268,285.

' 5 Ware, etc., and for various purposes. The `primary objects of my invention are to improve machines ofthis type by providing a more directly acting driving mechanism with substantial and durable operating parts ;'y to com- 1 0 bine the parts in such manner asl to'localize and facilitate theadjustment of the press for various purposes; to render the operating `parts more durable andreduce the cost of maintenance re uired for similar presses new 15in use; and tocecreasethe cost of manufacture of the press by reducing the parts thereof to a minimum for adequate and ecientoperation. l

The press of my invention is of the type 2o utilizing a vertically reciprocating spindle vand upper die member together with a horifzontally disposedmold carrying table upon which the lower dies or molds are supported.

The mold carrying table may be used as a stato tionary die support in connection with the reciprocatinof spindle and its upper die, or the table may oeintermittently rotated 'to bring the molds or lower dies-carried thereby in register with the upper die carried by the ver- :o tically reciprocating die spindle. Means are provided for driving and operating the various parts in synchronism so that the horizontally rotating table may be intermittently stopped and'retained in stationary position 35 during the pressing operation, after which the mold for the article is loosened and ejected from the table, and then the pressed article may be removed from the mold.

The invention consists in certain novel comi0 binations and arrangements of parts as will hereinafter be more fully set forth and claimed.

In the accompanying drawings, I have illustrated one complete example of the physi- 4-5 cal `embodiment of my invention wherein the parts are combined and arranged according to the best inode I have so far devised for the practical application of the principles of my invention.

Figure 1 is a front elevation of the machine embodying my invention with shields, and other details which are not essential for disclosurel in the patent drawings, omitted for convenience of illustration;

Fig. 2 is al View in Yside elevation with the base in section to disclose operating parts therein; Y

Fig. 3 is an enlarged horizontal sectional view of the base showing the driving mechanism and some of the operating mechanism;`

Fig. 4 is an enlarged vertical Vsectional view of the rotary table, its operating mechanism stop mechanism, and part of the ejector mechanism; Y Y

Fig. 5 is a sectional view as at line 54-5-01. Fig. 1 showing a plan ofthe table and base;

Fig. 6 is an enlarged detail sectionalV view at the center of the cross head as shown in Fig. 1;

Fig. 7 is a cross sectional view of the ej ector wrist plate showing its attachment to the ejector shaft and also showing the wrist pin carried by the plate;

Fig. 8 is a face view ofthe central part of the wrist plate of Fig. 7 showing the adjustment of the wrist pin;

' Fig. 9 is a detail pla-n view of the ratchet wheel and pawl forming part'otthe index mechanism for the rotary table;

Fig. 10 is a detail planl view showing the pailvl carried by its ratchet arm or radius lin Fig. 11 Vis a side view with parts in section of the cam and ratchet devices of the'index mechanism Fig. 12 is an enlarged vertical sectional view of the slotted stop pin sleeve or barrel;

Fig. 13 is a view of the slotted stop pin for the rotary table;

Fig. 14 is a plan View of one of a plurality of loosening levers carried by the table and showing its relation tothe stationary cam on the base by means of which the mold is loosened from the table;

Fig. 15 is a front view in elevation of parts of Fig. 14;

Fig. 16 is a detail sectional view of the cross rail and its spindle bearing;

Fig. 17 is' a detail View partly in section guards,

showing the safety pin and gear of the driving mechanism Fig. 18 is a sectional detail view of the top of the base showing the assembly opening together with lubricating devices; and

Fig. 19 is an enlarged sectional view as at line 1919 in Fig. 18.

The machine base 1 is provided with a flat top and suitable side and top openings, bearings, etc., being cast therein for the compact arrangement and housing of the operating mechanism. Above the base are supported a pair of upright frame members 2, 2 which together with the ratchet cross rail 3 bolted to these uprights, form the housing or superstructure of the press. A vertical drive shaft 4 is provided with bearings 5 in the table, and 6 in the housing at the top of the frame, and a gear 7 on this shaft 4 meshes with a driven pinion 8 on the die spindle 9. This die spindle is angular or square in cross section and is designed to revolve on its axis and to reciprocate vertically during the operation of the press. A suitable die member or upper die is fixed at the lower end of the vertically reciprocating spindle and of course this die member may be changed and replaced as desired.

In Fig. 6, the spindle 9 is shown particularly with a view to its adjustment with relation to the cross head 10. An adjustable threaded spindle sleeve 11 is carried on the spindle and this is threaded through the nut 12 which is fixed to the cross head 10 by means of the lock nut 13, bushings 14 being provided on the spindle between the adjustable threaded sleeve 11 and the spindle.V Thrust collars 15 are located at the underside of the cross head and encircle the spindle 9, and it will be apparent that the cross head'and spindle which Y are rigidly secured together for vertical movement, may readily be adjusted for raising or lowering the die plunger. In this manner, the adjustment of the parts is locall ized at the center of the cross head and any danger of the cross head and dies getting out of alinement is eliminated.

In Fig. 16, it will be seen thatthe spindle is free to reciprocate in the bearing bushing 16 and a collar 17 for the spindle is provided in the cross rail 3 to hold the spindle in alinement through its upper bearing and the adjustable bearing of the cross head.

The cross head in its vertical movement is guided by means of a pair of spaced angular guide rods 18, 18 and the cross head has slide bearings over these rods which at their upper ends pass through bosses 19 of the cross rail 3 and are fixed in bosses 2O in the interior of the hollow base 1. Nuts 21 are used on the threaded ends of these guide rods to secure them in rigid position and the guide rods also perform the function of tie rods between the cross rail 3 and the base 1 to form with the upright frame members 2 be successively brought into registration with 33 in the gear and collar.

a rigid superstructure for the press. The guide rods are provided with liners 22 on their angular faces which provide wearing surfaces that may readily be replaced when worn in order that the machine may be maintained in good operating condition at comparatively little expense.

At the opposite ends of the cross head, a pair of connecting rods 23 are suitably connected and each connecting rod is pivoted to a bull gear 24 one of which is located at each end of the horizontally disposed gear shaft 25 that passes through the hollow base and is journaled in bearings 2G of the base. Each bull gear is engaged by a small pinion 27 located at the opposite ends of the pinion shaft 28 which is located Within the hollow base and journaled in bearings 29 within the base. In order to avoid breakage of operating parts due to emergencies arising during the operation of the press, a safety device is provided in connection with the safety gear 30 which is carried by the shaft 28. As best seen in Fig. 17, this gear 3() is located adjacent to a collar 31 on the shaft 28 and a pin 32 connects the collar 31 with the gear 30. The pin is located in complementary bushings 33 and The collar is rigid with the shaft 28 and the gear 30 is loose on this shaft, and consequently should an emergency arise whereby undue strain is applied to the reciprocating cross head and spindle, this safety pin will be broken and the drive of the cross head thus disconnected.

The safety gear 30 is driven through the medium of a driving pinion 34 on the shaft which is journaled in bearings 35 exterior of the press base. The shaft 35 is driven through the pinion 36 which is located on the shaft of the electric motor 37, and this pinion engages a driven gear 36 on the shaft 35 as best seen in Fig. 3. As indicated in Fig. 2, these driving elements 'are enclosed by guards as 38, but for convenience of illustration the guards have been omitted.

At the front of the base and in position for cooperation with the reciprocating spindie, a rotary table 39 is supported at the top of the base 1. This table is circular in shape and is provided with mechanism whereby it may be intermittently rotated. At the front of the table a semi-circular guard 39a is provided which at its ends is bolted to the base l and as indicated in Figs. 2 and 4, encircles the lower outer edge of the rotating table. The table is designed to carry a plurality of molds or lower dies for cooperation with the upper die that is carried at the lower end of the reciprocating die spindle 9. In this instance, the die holes or mold holes 40 are shown as four in number and located at diametrical points in the table 39 so that the molds carried in these mold or die holes may and directly Vbeneath the reciprocating spin die 9 which carries the upper die members. The rotation of the table and the reciproca- .tion of the spindle are of course coordinated so that the mold in a hole 40 is held in place to receive the die on the end of the spindle when the latter completes its downward or working stroke.

The horizontally -disposed circular table 39 is keyed to a vertical shaft 41 and this shaft is supported in upper and lower bearings 42 and 43, bushings 43 being used as indicated in Fig. 4. The table is provided with a resilient support which Will relieve the table from friction With the base. when lthe former is rotating, and for this purpose a spring 44 Within the base 1 is coiled about tile lower end of the table shaft 41 and located between the lower bearing 43 and a `thrust bearing ring 45 on the shaft. Above the ring 45 a split collar 46 is threaded on the shaft, and the shaft of course isprovided with threads for this purpose. By turning the split collar or nut 46,I the tension of the spring 44 may be varied and in this manner the resiliency of the support for the table may be varied to regulate or control the friction between the table and the base as the former rotates. l A

The table is designed to be intermittently rotated for the purpose of successively presenting the diametrieally arranged molds beneath the reciprocating spindle for the upper die member. Of course, the number of molds carried by the table may be varied and consequently the movement of the table and that of the reciprocating spindle may also be varied and coordinated. The mechanism for intermittently rotating the table comprises a ratchet mechanism of Which the ratchet Wheel 47 that is keyed to the table shaft, forms a part. Above. the ratchet Wheel 47, a radius link '48 is interposed between this ratchet Wheel and the bearingr 42, and this link is loosely supported on the shaft. A pawl 49 is pivoted at: 50 at the free end of the link for coaction with the. table of the ratchet Wheel. The pawl is fashioned with a lug 51 that projects upwardly above the plane of the ratchet Wheel and into the plane of the radius link, and a spring 52 is located in sockets between the lug' 51 and the radius link 48, as best seen in Fig. 10 for the purpose of holding the paWl 49 in normal engagement with a tooth of the ratchet Wheel 47. A connecting rod 53 is pivoted on the pin 50 of the paivl and this connecting rod has a floating support at its opposite end in the form of pivoted bracket 54 which is hinged to the connecting rod 53 by means of the pivot pin 55 and nut 56. The pin or bolt 55 of coursei passes through the free floating end of the connecting rod 53 and through a boss on the bracket hanger 54. The bracket hanger 54 has a hinge pin 57 and bearingsrS on the inner face at the inside of the base 1, and it will be apparent that both ends of the connecting rod 53 are free to partake of movements While the rod itself hasimpartedthereto a ioating movement. Thus the pin 55 of the connecting rod 53 has journaled at its upper end a cam roller 59 and this cam roller projects into a cam member 60 which is keyed on the shaft 4 and is driven as Will be hereinafter set forth. The cam member is provided with a -suit-able track at its underside for the cam roller 59 and it will be apparent that the mov-ement of the cam roller due to the action of the cam 60, imparts successive movements to the ratchet mechanism for the purpose of intermittently rotating the table shaft 41 and its table 39, thereby successively presenting the molds'that are carried by the table into operative position below the vertically reciprocating die member carried by the spindle 9.

As the table rotates and its mold is brought into register with the reciprocating spindle,

.the movement of the table is positively `stopped and the table is rigidly held during the pressing operation. For this purpose the table at its underside is provided with a number of sockets in radial alinement Wit-h and corresponding in number to the mold holes or die holes 40 ofthe table. In these sockets are secured table. locating;r bushings 61 that are provided with tapered lower ends into'which the. upper tapered end of the stop pin 62 is; adapted to enter. This stop pin 62 is arranged to reciprocate vertically in a flanged barrel 63 and this barrel or sleeve is rigidly supportedt in a boss 64 fashioned inteefrallyI at the underside of the top of the base 1` The stop pin is normally urged up ward by means of a spring 65'located in the barrel 63 and interposed between the lower end of the pin 62 and a screw plug 66 that closes the lower end of the barrel. A-cam lever 67 is pivoted at 68 in a bracket 69 adjacent to the stop pin, and one end offthis cam lever projects through a slot 70 in the barrel and into a slot 71 in the pin Within the barrel. Thus it will be apparent that the cam lever is designed to lower the pin against the tension of the spring 65, and the spring t when free to do so, raises or lifts the pin 62 into engagement With one of the bushings 61. The cam lever 67 carries a cam roller 72 on its free end and this roller coacts with a cam 73 fashioned on the upper edge of a sleeve 7 4 which is made integral With and located on top of the main ratchet cam 60.v Thus it will be apparent that the ratchet mechanism and the stop mechanism are coordinated and so operated that as successive intermitten rotary movement is imparted to the table by the ratchet mechanism, the stop mechanism stops the movement of the table' and holds it stationary for the pressing` operation.

In Figs. 14 and 1.5 particularly, the means for loosening the mold from the table are illustrated. These loosening means include four loosening levers 75, one arranged adjacent to each mold hole 40. Each of these levers at its inner end is provided with a stop lug 76 and the levers are pivoted in bearings 7 7 secured at the under side of the table 39. At the under side of each lever, a cam face 73 is provided and these cam faces are designed to successively ride over the cam face 79 of a plate 80 that is bolted to the front upper edge of the base plate 1 in the path of Inovement of these four loosening levers. Thus as the molded article is presented at the front of the table, the lever beneath that portion of the table engages the cam face 79 and the mold is loosened by the action of the lever due to its passage over the cam face 79.

The completed article and mold are ejected by mechanism located at the front of the machine and below the front portion of the circular rotating table, and this ejector mechanism includes a vertically arranged ram 81 which is provided with a rack face 82 and is vertically reciprocable in a ram housing 83 which housing is bolted to a vertical flange 84 on the exterior of the front part of the base 1. At one side the housing is fashioned with a vertically arranged slot 35 in which the toothed edge of a` sector or arcuate gea-r 86 is positioned and designed to cooperate with the rack S2 of the ram. This arcuate gear is supported on a stud shaft 87 supported in the front wall of the base '1. A connecting rod 83 is pivoted to the arcuate gear and connected to the wrist pin 39y of the wrist plate 90, andthe pin is adjustable in the wrist plate for the purpose of adjusting the stroke of the rod 8S and the action of the arcuate gear in connection with the ram 81. For the purpose of adjusting the pin to vary the stroke of the connecting rod, the pin as best seen in Figs. 7 and 8 is provided with a head 91 that is located in a radial undercut groove 92 fashioned in the face of the wrist plate 90. An adjusting screw 93 is threaded in this head and has a bearing in the block 94: which is secured by screws 95 in a transverse socket at the center of the wrist plate 90. It will be apparent that by turning the screw 93, the position of the head 91 with relation to the center or axis of the wrist plate may be varied, to shorten or lengthen the stroke of the connecting rod. The wrist plate is fashioned with a sleeve 96 which is keyed on the ejector shaft 97 and a set screw 98 is used to hold the wrist plate in adjusted position on the shaft. This ejector shaft 97 is located within the hollow base 1 and journalled in bearings 97a as best seen in Fig 3.

The transmission mechanism for the operating parts heretofore described is located within the hollow base as best seen in Fig. 3. A ack shaft 99 is journalled in bearings 100 and provided with a pinion 101 that meshes with the safety gear 30. For revolving the shaft il, a gear coupling comprising bevelled gears 102 and 103 are provided, the former on the jack shaft andthe latter on the shaft l. The shaft 25 for the bull gears 24 is operated through gear 101 which engages the gear 104 on shaft 25, and the ejector shaft 97 is rotated by a gear coupling including the bevelled gear 105 on the jack shaft and the complementary gear 106 on the ejector shaft.

For convenience of illustration, I have omitted from the drawings some parts including guards, guides, shields, etc., that are not essential in the Patent Olice drawings. Some of the details of construction have also been omitted, but in Figs. 13 and 19, I have shown some of the details for lubricating operating parts and giving access to the interior of the press base 1. For instance, the top of the press is provided with a flanged assembly opening 107 as indicated in Fig. 18,

and this opening is normally closed by a cover plate 103. At the opposite sides of the center of the top of the base, I have shown oil reservoirs 109 from which parts within the base may be lubricated. l/Vithin each reservoir, I utilize a pad 110 and the bottom of the reservoir is provided with screw' threaded openings 111 for outlets from the reservoir. These oil reservoirs are provided with covers 112 which are secured by screws or other devices, and oil cups are indicated at 113 for supplying lubricant to the reser 10G voirs 109.

From the above description taken in connection with the drawings, it is believed the construction and operation of the press will be readily understood. For adjusting and 105 setting the machine, the index cam 60 is turned to its extreme position as indicated in Fig. 9. so that the stop pin 62 will lock the table in position of Fig. a. At this time, the ejector ram 8l should start to risc and' 11u the cross head 10 is in position of about onehalf of its down stroke. The parts of course are operated from the motor and the die spindle 9 reciprocates four times of each revolution of the rotary table. The stop pin is also 115 synchronously operated and is actuated four times during the revolution of the table as is also the ram mechanism.

Having thus fully described my invention, what I claim as new and desire to secure by' 120 Letters Patent is- 1. The combination in a press with a pair of vertical guides and a cross head, of a rotatable spindle angular in cross section and means for operating the spindle, means for reciprocating the cross head, and means for adjusting the spindle in the cross head.

2. In a press, the combination with a pair of spaced guides and a cross head thereon and means for reciprocating said cross head, of a :7.39

spindle and operating means therefor, an adjusting sleeve on the spindle, an adjusting nut carried by the cross head, and means for locking said nut and sleeve with relation to the spindle and cross head.

3. The combination in a press with a pair of guides angular in cross section and a supporting housing, of a cross head, means for reciprocating the cross head, and a spindle in said cross head, of an adjusting nut located in the cross head, a threaded sleeve on the spindle within said nut, lock nuts below the adjusting nut on the spindle, andfmeans for operating the spindle.

4. In a press the combination with an intermittently rotated mold carrying table and means for operating said table, of a plurality of locating bushings carried by said table, a stop pinl adapted to successively engage said bushings, and means for actuating said stop pin.

5. The combination with an intermittently rotated mold carrying table having a locating bushing, of a stop pin adapted to engage said bushing, a lever and spring for actuating said pin, and cam operated mechanism for actuating the lever.

6. The combination with a rotary table having a locating bushing therein and a supporting base, of a sleeve in the base and a stop pin in the sleeve, a spring in the sleeve and a pivoted lever for actuating the pin, and cam operated mechanism for actuating the lever.

7. In a press the combination with a base having an arcuate guide bar, of a rotatable mold carrying table having an annular flange i for coaction with the guide bar and with a portion of the base, a shaft for the table and bearings for the shaft, and means for rotating said shaft.

8. The combination with a rotary table and its shaft and a ratchet Wheel on the shaft, of a link loose on the shaft and having a pawl for engagement with the ratchet wheel, a connecting rod pivoted to the link and having a fioating support for one end, a cam roller j ournaled at that end of the connecting rod, and a driving cam engaging said roller.

9. The combination in a press with a pair of vertical guides and a cross head, of a rotatable and reciprocable spindle, apinion on the spindle and a stationary bearing for the pinion, an operating shaft parallel with the spindle and a drive gear thereon engaging the pinion, and means for operating said shaft and reciprocating the cross head.

FRANK B. YINGLING.

10. In a press the combination with a base A having an arcuate guide bar, of a rotatable mold carrying table having an annular flange for co-action with the guide bar, a shaft for the table and a resilient bearing for the shaft,

v an arcuate shaped dust guard at the front of the table between the latter and said base, and means for rot-ating the shaft. 

